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v3.19.3

Supplemental Statement of Operations Information (Details) (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Sep. 30, 2019 | Sep. 30, 2018 | Sep. 30, 2017
Schedule of Statement of Operations Supplemental Disclosures [Line Items] |  |  |
Restructuring Reserve | $ 1.7 | $ 0.9 |
Other Nonrecurring Expense | 5.1 |  |
Reorganization Items | $ 4.3 |  |
Document Period End Date | Sep. 30, 2019 |  |
Included in selling, general and administrative expenses: |  |  |
Research and development | $ 14.3 | 11.6 | $ 12.1
Advertising | 7.1 | 7.1 | 5.2
Interest expense, net: |  |  |
Capitalized interest | (3.0) |  |
Interest rate swap contracts | 0.0 | 0.6 | 1.9
Deferred financing fees amortization | 1.2 | 1.6 | 1.8
Other interest expense | (0.2) | (0.6) | (0.6)
Interest Expense | 23.3 | 25.3 | 24.2
Interest income | (3.5) | (4.4) | (2.0)
Interest expense, net | (19.8) | (20.9) | (22.2)
Other Cost and Expense, Operating | 16.3 | 10.5 | 10.4
Secured Debt [Member] |  |  |
Interest expense, net: |  |  |
Debt instrument interest expense | 0.0 | 14.4 | 19.1
Seven Point Three Seven Five Senior Subordinated Notes [Member] |  |  |
Interest expense, net: |  |  |
Debt instrument interest expense | 24.8 | 7.5 | 0.0
Capitalized interest |  | 0.0 | 0.0
ABL Agreement [Member] |  |  |
Interest expense, net: |  |  |
Debt instrument interest expense | 0.6 | 0.6 | $ 0.8
Mueller One Project [Member] |  |  |
Interest expense, net: |  |  |
Other Cost and Expense, Operating |  | $ 4.6 |
Middleboro [Domain] |  |  |
Schedule of Statement of Operations Supplemental Disclosures [Line Items] |  |  |
Restructuring Reserve | $ 0.7 |  |

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